import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

public class MaxminMap extends Mapper<LongWritable, Text,Text, IntWritable> {
    @Override
    protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
            String line = value.toString();
            String[] qp = line.split(","); //逗号切片
            //key学生姓名   value是成绩
            context.write(new Text(qp[1]),new IntWritable(Integer.parseInt(qp[2])));
    }
}
